315221314771 has 4 divisors (see below), whose sum is σ = 343877797944. Its totient is φ = 286564831600.

The previous prime is 315221314769. The next prime is 315221314813. The reversal of 315221314771 is 177413122513.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 315221314771 - 2¹ = 315221314769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 315221314771.

It is not an unprimeable number, because it can be changed into a prime (315221314721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14328241570 + ... + 14328241591.

It is an arithmetic number, because the mean of its divisors is an integer number (85969449486).

Almost surely, 2^315221314771 is an apocalyptic number.

315221314771 is a deficient number, since it is larger than the sum of its proper divisors (28656483173).

315221314771 is a wasteful number, since it uses less digits than its factorization.

315221314771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28656483172.

The product of its digits is 35280, while the sum is 37.

The spelling of 315221314771 in words is "three hundred fifteen billion, two hundred twenty-one million, three hundred fourteen thousand, seven hundred seventy-one".